-use crate::utils::{higher, span_lint};
+use clippy_utils::diagnostics::span_lint;
+use clippy_utils::higher;
use rustc_hir as hir;
use rustc_hir::intravisit;
use rustc_lint::{LateContext, LateLintPass, LintContext};
use rustc_session::{declare_lint_pass, declare_tool_lint};
declare_clippy_lint! {
- /// **What it does:** Checks for instances of `mut mut` references.
+ /// ### What it does
+ /// Checks for instances of `mut mut` references.
///
- /// **Why is this bad?** Multiple `mut`s don't add anything meaningful to the
+ /// ### Why is this bad?
+ /// Multiple `mut`s don't add anything meaningful to the
/// source. This is either a copy'n'paste error, or it shows a fundamental
/// misunderstanding of references.
///
- /// **Known problems:** None.
- ///
- /// **Example:**
+ /// ### Example
/// ```rust
/// # let mut y = 1;
/// let x = &mut &mut y;
return;
}
- if let Some((_, arg, body, _)) = higher::for_loop(expr) {
+ if let Some(higher::ForLoop { arg, body, .. }) = higher::ForLoop::hir(expr) {
// A `for` loop lowers to:
// ```rust
// match ::std::iter::Iterator::next(&mut iter) {
// Let's ignore the generated code.
intravisit::walk_expr(self, arg);
intravisit::walk_expr(self, body);
- } else if let hir::ExprKind::AddrOf(hir::BorrowKind::Ref, hir::Mutability::Mut, ref e) = expr.kind {
+ } else if let hir::ExprKind::AddrOf(hir::BorrowKind::Ref, hir::Mutability::Mut, e) = expr.kind {
if let hir::ExprKind::AddrOf(hir::BorrowKind::Ref, hir::Mutability::Mut, _) = e.kind {
span_lint(
self.cx,
if let hir::TyKind::Rptr(
_,
hir::MutTy {
- ty: ref pty,
+ ty: pty,
mutbl: hir::Mutability::Mut,
},
) = ty.kind